istanbul-lib-coverage

An API that provides a read-only view of coverage information with the ability to merge and summarize coverage info.

Supersedes object-utils and collector from the v0 istanbul API.

See the docs for the full API.

1var libCoverage = require('istanbul-lib-coverage');
2var map = libCoverage.createCoverageMap(globalCoverageVar);
3var summary = libCoverage.createCoverageSummary();
4
5// merge another coverage map into the one we created
6map.merge(otherCoverageMap);
7
8// inspect and summarize all file coverage objects in the map
9map.files().forEach(function(f) {
10    var fc = map.fileCoverageFor(f),
11        s = fc.toSummary();
12    summary.merge(s);
13});
14
15console.log('Global summary', summary);